In the following, regression maps are the typical SLP anomaly at each grid point for a
one-standard deviation fluctuation in the mode. Correlation maps
indicate the correlation of the SLP anomaly at a grid point with the index.

EOFs 1-3 digital values in a netCDF file.
Map 1: EOF 1 plotted as a correlation map,
Map 2: Typical SLP variations in mb associated with a one-standard deviation
fluctuation in EOF 1. Technically this is the regression map of SLP
anomalies onto the standardized PC 1.
Maps 3 and 4: same as maps 1 and 2, but for EOF 2.
Maps 5 and 6: same as maps 1 and 2, but for EOF 3.

It is also helpful to view the plots in a polar stereographic
projection.GIF |
PDF |
PS
The 3 EOFs are superimposed, with EOF 1 contoured in black,
2 in red, and 3 in blue. The contour interval is odd-numbered millibars.

GIF |
PDF |
PS
The same analysis with each of the modes also plotted separately. Contour
interval is mb, with the zero contour omitted.